Meat-chopping machine.



A. NIELSBN.

MEAT SHOPPING MACHINE.

APPLIUATION FILED SEPT. 26, 1911.

1,029,141 Patented June 11, 1912.

' 4UITEI) STATES PATENT OFFICE.

ANDREAS NIELSEN, OF GOPENHAGEN, DENMARK, ASSICT'NOR TO HARALD FRIIS, FREDERIKSBERG, NEAR COPENHAG-EN, DENMARK.

MEAT-CHOPPING MACHINE.

Specicaton of Letters Patent. i Patented June 11, 1912, Application filed September 26, 1911.

Serial No. 651,358.

To all whom t may concern.'

Be it known that I, ANDREAS NIELSEN, subject of the King of Denmark, residing at Langebrogade 6, Copenhagen, Denmark, have invented new and useful Improvements in Meat-Chopping Machines, of which the following is a specification.

The invention relates to a meat chopping machine of the kind where the meat to be treated is placed on a rotary table, and is acted upon by a number of circula-r knives provided on a rotary shaft, placed radially or nearly radially in relation to the table and above it. Ordinarily the peripherical speed given to the knives in machines of this kind is the same as that of the point of the table top located below eachparticular knife. This causes the circular knives to actually roll on or in contact with the tableslab, and consequently their action on the meat will not be properly cutting, but will only consist in their impressing themselves into the meat. According to the present invention, the capacity and entire manner of action of such machines is imp-roved by there being imparted to the rotary knives a considerable relative velocity in relation to the table-slab, z'. e. by the edge ofthe circular knives rapidly advancing ahead of the table-slab. Thereby the edge of the circular knives will be caused to move in a really effective cutting manner. on the meat, exactly as when a knife is drawn lengthwise through a piece of meat at rest.

On the drawing is shown, in Figure 1 in diametrical section through the table-slab, viz. in longitudinal section through the shaft of the circular knives, a manner of execution of a machine constructed according to this invention. Fig. 2 is a longitudinal section along the knife shaft in larger scale and Fig. 3 is a cross section of the shaft and part of the table with a hood over the knives.

Referring to the drawing, 1 is a base whereto is xed a pin 2, serving as a journal for a plane table- 3. The table-slab has, at its center, a guiding bush 4, encircling said pin and, at its periphery, a vertically projecting rim 5. In connection with the base 1, a bracket 6 is provided forming, at top, a bearing 7 for the radially directed knife shaft 8, parallel to the table-slab. The second bearing 9 for this shaft is placed above the journal bush 4, and is fastened to the stationary pin 2. Between the hub 4. and the bea-ring 9, a loose ring 1() is inserted. Beyond the bearing 7, the knife shaft 8 carries a pulley 11 fastened thereto, and at a thinner portion of the shaft, between the bearings 7 and 9, the circular knives are located. Every other one of these 12, 12 is fastened to the shaft, and every other one 13, 13 is loose thereon. The detailed arrangement of this appears from Fig. 2 where 12, 12 are two of the fixed disks and 13 one of the loose ones. The fixed disks 12 reach clear in to the shaft 8, and between these, sleeves 14 are inserted, fitting around the shaft and all being pressed together between a shoulder 15 thereon (F ig. 1) and a tightening device 1G. Between every two disks 12, and out-side of the sleeve 14:', is placed another sleeve 17, one end of which forms a shoulder, while the other end thereof is worked down to a smaller diameterand is threaded and fitted with a nut 18, the knife 13 being held tightly between this nut and the shoulder 17. This disk may thus freely rotate around the shaft, there being a little play between the knives 12, 12 and the bushing 17-18. The driving pulley 11 supports, at its left-hand side, a cord pulley 19 driving, by means of a crossed cord, or other transmission, a cord pulley 20, provided below and fastened on a shaft 21, journaled in the bracket 6. Onto this shaft, and within the bracket, is fastened a conical friction roller 22 or pinion or the like, engaging a correspondingly provided face 28 on the underside of the table.

The manner of action of the machine is the following. Vhen the shaft 8 is revolved in the direction indicated by means of an arrow, it will drive the cord pulley 20 and thereby the roller 22 in the opposite direction, and the table will then move in a direction, opposite to that of the hands of a clock, when the table slab is viewed from above, in other words, the table-slab below the knives will move in the same direction as the lower edges thereof. The loose knives will then be rolling against the meat placed on the table-slab, thereby naturally impressing themselves therein, but the actual cutting action will be due to the xed knives 12, these receiving, by means of a suitable dimensioning of the transmissions, a considerably greater circumferential speed than that possessed by the corresponding points of the table;y The A'proportions may, fof message@ such thatthe table-slab makes about fl() revolutions, while the knives make about 1000 revolutions per minute. Hereby the fixed knives, as previously mentioned, will be.

caused to exert an extremely powerful cutting act-ion, and the loose knives will 1ncrease this action by holding the meat onto the table, as it were, during. the cutting. Besides, the entire arrangement will cause an extremely powerful mixing to take place, the meat being Hun-g from the knives toward the table-edge 5. Even without the roller 22 which is driven from the shaft 8 the tableslab will naturally come into rotation, as soon as meat is fed on, as the motion of the driving shaft 8 will then be transmitted through the knives and the meat to the slab. Therefore the roller 22, rather than to drive the table-slab, serves to absorb the downremovedlV This guard, as shown in Fig. 3,

Vmay carry a kind of comb whose teeth 23 project in between the individual knives, in order to prevent the meat from being lodged between these. As the knives fastened onto the shaft possess a very considerable speed of rotation, they will, on account of the centrifugal force alone, be able to keep themselves clean, and the teeth of the comb will therefore only need to act against the sides of the loose knives.

Having now particularly described and ascertained the nature 0f my Vsaid invention and in what manner the same is to be performed, I declare that what I claim is In a meat chopping machine the combination of a rotary table with a shaft located above the table, means for rotating said shaft at a considerable speed relatively to the peripheral speed of the corresponding points of the table, and a plurality of circular knives rigidly secured on said shaft and a plurality of circular 'knives mount-ed to run loose on the shaft.

The foregoing specification signed at Copenhagen this fourteenth day of August,

ANDREAS NIELSEN. ln presence of- .JULrUs LEHMANN,

Ovn GIERSING.

Copies of this' patent may 'ne obtained for five cents each, by addressing the Commissioner` of Patents,

A Washington, I). C. 

